This is a model that adapts the discontinued, cost-effective masterpiece "RNC1773" to the API 500 series standard. [Product Condition] It was rarely removed from the rack, so there are minor scratches, but it is generally clean. It was used installed in a 500 series rack until just before listing, and its operation has been confirmed. Non-smoking environment. Pets (cats) are present but are not allowed in the room. ■ Accessories Main unit only *A separate API 500 series compatible power chassis is required for use. Please feel free to request additional photos or ask any questions.